How to use celebrate with Node.js

The tutorial explores the importance of server-side validation in web applications, particularly in a note-taking app with a login system, emphasizing its role in mitigating security risks, ensuring data consistency, and filtering malicious data. It highlights the use of the JavaScript libraries joi and celebrate for schema-based validation of user inputs, including request bodies, headers, query strings, parameters, cookies, and signed cookies. The tutorial provides a step-by-step guide to setting up a Node.js app with Express and demonstrates how to implement validation using joi and celebrate. It covers error handling with celebrate's middleware, testing endpoints with Postman, and offers practical examples of validating different parts of requests. The article also introduces using cookie-parser to handle cookies and signed cookies, showcasing their integration with validation schemas. Additionally, it discusses tools like LogRocket for monitoring and debugging Node-based applications, ensuring efficient and secure web app performance.